Digital PCT265 defect CXTDT-531317: Give the default page type for those that send an empty string.

MVMCoreUI/Atomic/Templates/BaseTemplateModel.swift

@@ -83,6 +83,9 @@ import Foundation
         let typeContainer = try decoder.container(keyedBy: CodingKeys.self)
         if let defaultPageType = Self.defaultPageType() {
             pageType = try typeContainer.decodeIfPresent(String.self, forKey: .pageType) ?? defaultPageType
+            if pageType.isEmpty {
+                pageType = defaultPageType
+            }
         } else {
             pageType = try typeContainer.decode(String.self, forKey: .pageType)
         }